This is a great reason for misunderstanding between you and your friend, from her own perspective she must have thought u said something to him that made him choose you over her.
But I would have appreciated it, if she was a little bit more understanding because the fault was not yours, she forced you to talk to him in the first place but females can be fragile sometimes especially if it has to do with guys they like.
I guess you learnt your actions.
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